En-vironmental Control System 基本例句 环境控制系统 Other major changes were limited to ejection seats instead of Mercury's escape tower and the environmental control system, in essence two Mercury systems hooked together.另外的大改动就是将墨丘利飞船的逃生保护装置和环境控制系统改为弹射座位，实质上是将两个墨丘利系统连接在一起。